What happened:

1. one drive in one of my Pools failed. The pool is Btrfs RAID10, let's call it "the_btrfs_pool"

2. I pulled the drive physically

3. I started Array, Full rebalance the RAID10 without error

   1. The pool now looks like this:

4. I tried stopping the Array

5. Server stuck at unmounting drives.

6. Reboot did nothing. Unclean shutdown.

7. Server reboots to 500 Internal Error, log shows emhttpd error: "emhttpd: pool_state_btrfs 3167 rdevStatus.33 not found"

8. I deleted "the_btrfs_pool.cfg" from "boot/config/pool" folder

9. reboot server, GUI and emhttpd came online without issue. "the_btrfs_pool" totally disappeared from GUI.

So the question is what I should do next?

I imagine I could:

a. Recreate the btrfs pool exactly as is with 3 drives

b. do a "New Config"

which one is safe to do? I'm worried my "super.dat" my be messed up due to my operations.

Thanks!

tower-diagnostics-20250708-0720.zip

The attached diagnostics are created after step 6. There's no PHP error log at all. I tried "restart" the 2 php/nginx service, none helped.

Thanks!

Edited July 9, 2025Jul 9 by StylishQuoter

create a new pool with the same name 3 slots

assign the pool device(s), leave the filesystem set to auto

start the array to import the pool